His Story: Martin Fregene is the director of a project called BioCassava Plus. Cassa-what? It's cassava and it’s a really popular root vegetable (think potato) eaten by more than 700 million people around the world. Often times it's the only thing people can rely on as their main source of food, but it is lacking in important vitamins and minerals needed for human development.Martin and a team of scientists from the Donald Danforth Plant Science Center in St. Louis, Missouri are doing really smart work to improve the nutritional status of traditional cassava to give cassava lovers a nutritional boost. This more nutritious version of cassava has much higher levels of vitamin A, protein and iron, making it better for you. Martin says that this project is really important, because it could help millions of people avoid devastating health consequences. While science and research lead to amazing discoveries, Martin thinks that the most exciting part is seeing how science, math and agriculture can all come together to help the hungry and malnourished.